[Slackbuilds-users] DOWNLOAD advice for github

[Andrzej Telszewski]

On 14/05/16 18:35, David Spencer wrote:
> Hi everybody,
>
> For maintainers, here's some advice about what to put in DOWNLOAD in
> the .info file for github URLs.
>
> NOTE: you don't need to change any of your existing files, this is
> just some general advice that we hope you will find helpful and
> interesting and useful. Also, this is not related to 14.2, it is
> actually some new advice about github that Heinz worked out yesterday
> :)
>
> Hopefully, most of you know already that github is "clever" with
> download URLs. It uses an HTTP "content disposition" header to tell
> browsers the name of the archive that githib has dynamically created.
> But by default wget and curl do not use the "content disposition"
> header and use the last component of the URL as a filename. Therefore
> (until now) our SlackBuilds have needed to try both possible names for
> the download, e.g.
>
> tar xvf $CWD/v$VERSION.tar.gz || tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
>
> So, here's the new advice: Heinz has worked out that if we use (for example)
>
> DOWNLOAD="https://github.com/trizen/clyrics/archive/0.04/clyrics-0.04.tar.gz"
>
> then the archive will *always* be named clyrics-0.04.tar.gz, even if
> we use wget or curl, and so we can just do the usual tar command in
> the SlackBuild:
>
> tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
>
> Apparently this will even work nicely for projects that include the
> project name in the git tag, e.g.
>
> DOWNLOAD="https://github.com/christophgysin/pasystray/archive/0.5.2/pasystray-0.5.2.tar.gz"
>
> so we can now stop using confusing and ugly commands like these:
>
> rm -rf $PRGNAM-$PRGNAM-$VERSION
> tar xvf $CWD/$PRGNAM-$PRGNAM-$VERSION.tar.gz
> cd $PRGNAM-$PRGNAM-$VERSION
>
> I hope this is helpful to you.  Thanks to Heinz for finally working
> out the right way of handling this!
>
> Best regards to everybody
> -D.
>
> ps. If I've made any mistakes above, corrections will be gratefully received :D

Well appreciated!

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-- 
Best regards,
Andrzej Telszewski